Abstract: The invention relates to a screwing tool for transmitting a set torque. Two torque-limiting arrangements (5, 7) are provided that are biased by the same spring element (9).

Abstract: This disclosure includes an expansion driver for adjusting expandable implants, the expansion driver including an input shaft operably connected to at least one bevel gear, the at least one bevel gear configured to engage each of a first gear and a second gear; the first gear connected to a first output shaft, the first output shaft terminating in a first driver configured to communicate with a first actuator of an expandable implant; the second gear connected to a second output shaft, the second output shaft annularly disposed around at least a portion of the first output shaft; and at least one pinion configured to transfer a torque from the second output shaft to a second driver extending parallel to the first driver and configured to communicate with a second actuator of the expandable implant. Upon a rotation of the input shaft, a torque is applied to at least one of the first driver and the second driver.

Abstract: This disclosure includes an expansion driver for adjusting expandable implants, the expansion driver including: a first driver having a first gear disposed at a first end thereof; and a second driver having a second gear disposed at a first end of the second driver; and a handle operably connected to the first driver and the second driver, the handle having at least one bevel gear rotatably attached thereto, the at least one bevel gear engaging each of the first gear and the second gear; wherein upon a rotation of the handle a torque is applied to at least one of the first driver or the second driver.

Abstract: A torque wrench including a head, a handle, a primary beam, a secondary beam, and a torque adjustment mechanism. The primary beam couples the head and the handle for co-rotation about the rotational axis and the primary beam includes a first end adjacent the head and a second end adjacent the handle. The secondary beam is coupled to the head for rotation with the head about the rotational axis and the secondary beam is movable relative to the primary beam and the handle. The torque adjustment mechanism adjusts a torque setting of the primary beam relative to the secondary beam. The torque adjustment mechanism includes a thumb adjustment wheel that a user rotates about a first axis to adjust the torque setting by moving the second end of the primary beam relative to the handle along a second axis offset from the first axis.

Abstract: A rotating power tool assembly includes a rotating power base and a modular drive head. The rotating power base may be configured to rotate a spindle, and the modular drive head may be configured to be detachably coupled to the rotating power base. The modular drive head may comprise a torque control clutch, a working tip, and a torque value indicia. The torque control clutch may be non-adjustably structured to implement a torque limiting slip event that prevents the working tip from further rotation, despite continued rotation of the spindle, in response to the working tip being subjected to torque in excess of a discrete torque value. The torque value indicia may be externally visible and may comprise a visible characteristic that correlates to the discrete torque value.

Abstract: A reaction arm mounting assembly comprises a first part and a second part, the first part being configured for attachment to a power tool and the second part is mounted on the first part. The mounting of the second part on the first part: permits sliding motion between the first and second part along an axis common to the first and second parts in a first sliding region and prevents rotation between the first and second member in the first sliding region; and permits rotation between the first and second members in a second sliding region.

Abstract: A work tool includes a housing, a spindle, a motor, a power-transmitting mechanism and a restricting member. The power-transmitting mechanism includes a sun member, a ring member, a carrier member and a planetary roller. One of the sun member and the ring member is configured to move together with the spindle in the front-rear direction relative to the other of the sun member and the ring member. The power-transmitting mechanism is configured to transmit power of the motor to the spindle when the sun member and the ring member relatively move toward each other in response to rearward movement of the spindle and the planetary roller gets into frictional contact with the sun member and the ring member. The restricting member is configured to restrict the planetary roller from moving in the front-rear direction relative to the housing.

Abstract: An integrated disposable rotational speed reduction assembly having a shaft assembly, a housing, an output assembly, and a plurality of planetary gears each having a plurality of gear teeth. The shaft assembly is configured to cause rotation of the planetary gears with a sun gear. The rotation of the planetary gears is configured to cause rotation of an output shaft, with a reduction of rotational speed relative to the rotation of the shaft assembly.

Abstract: This disclosure includes an expansion driver for adjusting expandable implants, the expansion drivers includes: a first driver having a first gear disposed at a first end thereof; and a second driver having a second gear disposed at a first end of the second driver; and a handle operably connected to the first driver and the second driver, the handle having at least one bevel gear rotatably attached thereto, the at least one bevel gear engaging each of the first gear and the second gear; wherein upon a rotation of the handle a torque is applied to at least one of the first driver or the second driver.

Abstract: A fastening system including a frame, a movement control assembly, a fastener drive assembly and a collar presenting assembly. The frame can be coupled to an outside structure, for example, with a part that is to be coupled with a fastener attached to the frame. The movement control assembly is configured to controllably move the fastener drive assembly relative to the frame and the part so as to grasp the collar of the fastener, engage the threaded pin of the fastener and to threadedly engage the two structures together. The collar presenting assembly presents a collar of a fastener to the fastener drive assembly.

Abstract: A shear wrench tool including an electric motor having a motor output shaft, a transmission having a plurality of planetary gear stages and an output section having first and second output sleeves the first output sleeve being configured for mating with a nut and the second output sleeve being configured for mating with a tip of a bolt to be sheared, wherein the electric motor is configured to provide torque via the transmission to the output section for causing the first and second output sleeves to be rotated in opposite directions relative to each other in use, and wherein the electric motor, the transmission and the output section are arranged in an axial sequence one after the other such that the first and second output sleeves circumferentially extend coaxially around the same axis that the motor output shaft and the planetary gear stages rotate about.

Abstract: A compression screw driver system including a drive member having a shaft extending from a proximal end to a distal end. A drive selection member is positioned about the shaft and is axially moveable along the shaft between an engagement position and a disengaged position. A distal portion of the drive selection member defines a first engagement structure. A compression sleeve is positioned over the distal end of the shaft. The proximal end of the compression sleeve defines a second engagement structure which complements the first engagement structure and the distal end of the compression sleeve defines a contact surface. In the engagement position the first and second engagement structures are engaged and the compression sleeve rotates with the drive member and in the disengaged position the first and second engagement structures are disengaged and the compression sleeve remains stationary while the drive member rotates.

Abstract: A torque wrench includes a handle, a wrench, a clutch, an adjustor, a grip, a scale ring and a locking collar. The wrench includes a lever inserted in and pivotally connected to the handle. The clutch is connected to the lever to stop rotating a workpiece when a maximum value of torque is reached. The adjustor is connected to the clutch and includes a knob operable to adjust the maximum value of torque. The knob is provided with a first color. The grip is connected to the handle. The scale ring is connected to the grip. The locking collar is provided with a second color. The locking collar is movable between a locking position to prevent the knob from rotation relative to the grip and show the first color and an unlocking position to allow the knob to rotate relative to the grip and show the second color.

Abstract: The invention relates to an overload clutch for a drive gear mechanism for driving components of an aircraft wing, in particular for driving an outer slat flap of an aircraft wing, with at least one driving and at least one driven clutch body and with at least one torque transmission body arranged therebetween. The invention further relates to a drive gear mechanism with a corresponding overload clutch.

Abstract: A surgical instrument includes a body having a proximal end and a distal end and defining a lumen extending from the proximal end to the distal end along an axis, the distal end configured to abut an implant, and an anchor rod disposable within the lumen of the body for contacting the implant to secure the implant at the distal end of the body. When the anchor rod is disposed within the lumen of the body in a working configuration, the anchor rod is connected to the body at the proximal end of the body and at the distal end of the body to substantially fix the anchor rod from moving along the axis of the lumen. The body includes a handle, a shaft extending distally from the handle, and a torque limiting mechanism.

Abstract: A torque sleeve for a connector includes a slip ring, a torque ring, a torque spring, and an outer shell. The slip ring includes at least one axial movement inhibiting structure, and a plurality of first teeth having a first sawtooth pattern disposed in an axial direction of the torque sleeve. The torque ring includes at least one radial movement inhibiting structure, and a plurality of second teeth having a second sawtooth pattern disposed in an axial direction of the torque sleeve facing the plurality of first teeth. The torque spring is configured to apply a spring force against the torque ring to encourage movement of the torque ring toward the slip ring. The outer shell is configured to house the slip ring, the torque ring, and the torque spring within the torque sleeve.

Abstract: A torque socket having torque value indication, includes: a main body, one side thereof axially disposed with an insertion part and another side thereof axially formed with an accommodation slot, wherein at least one guiding tenon and an indication ring are radially and axially disposed on an outer circumference of the accommodation slot respectively, an outer circumference of the indication ring is annularly provided with torque value marks; a torque adjusting assembly, including a spring and a shaft cylinder, wherein an outer circumference of shaft cylinder is radially formed with an arc-shaped guiding slot allowing the guiding tenon to be inserted, the shaft cylinder can axially compress the spring for adjusting a torque value; and an end cover ring, having an indication mark at an outer circumference thereof. Accordingly, the indication mark can be aimed at one of the torque value marks for displaying a locking torque value.

Abstract: Screw fastener engaging/disengaging apparatus suitable for attaching/detaching wheels to/from vehicles has a frame and a set of parallel spindles mounted on the frame for holding one type of screw fastener at the spindle ends. The spindle ends are arranged in a circular array with the spindles rotatable about their longitudinal axes. The screw fasteners are configured for screw engagement with screw fasteners of another type mounted on a wheel attachment member to/from which a wheel can be attached/detached. An adjustment mechanism collectively changes positions of the spindle axes between a circular array with a first radius and a circular array with a second radius.

Abstract: A medical tool includes a rotation mechanism that further includes a warning feature. The warning feature provides an indication when the rotation mechanism has achieved a number of rotations.

Abstract: A device for adjusting an adjustment mechanism of a cutting tool includes a main body disposed about a longitudinal axis. The main body has a handle portion disposed at or about a first end of the main body which is structured to be gripped by a hand of an operator and a feature structured to engage a correspondingly-shaped feature of the adjustment mechanism disposed at a second end of the main body opposite the first end. The device further includes a first element fixedly coupled to the main body; a second element rotatably coupled to the main body such that the second element is freely rotatable about the longitudinal axis, the second element having a total mass which is disposed unevenly about the longitudinal axis; and an arrangement for determining the relative positioning of the second element in regard to the first element.

Abstract: A torque adjustment device of a torque wrench includes a handle having a passage defined axially therethrough, and a driving head is connected to one end of the handle. A torque adjustment unit is located in the passage of the handle and includes a stationary member, a threaded shaft threadedly extending through the stationary member, a rotary member and a spring. The shaft includes a threaded rod that extends beyond the rotary member. A sleeve is mounted to the threaded shaft. A rotary unit includes a tube which has a mounting section and a threaded section on two ends thereof. By rotating the tube, the rotary member and the threaded shaft are rotated relative to the stationary member so as to compress the spring to set the output torque value. A knob is then threadedly connected to the threaded rod to secure the output torque value.

Abstract: An electric ratchet wrench includes a driving member rotatably mounted in a body for driving a fastener. A pawl device is pivotably mounted to the driving member. First and second ring gears are rotatably mounted around the driving member and mesh with the pawl device. A direction switching rod is pivotably mounted to the driving member. A transmission shaft is rotatably received in the body and includes an end connected to a motor shaft of a motor. The other end of the transmission shaft is connected to a bevel gear disengageably meshed with the first and second ring gears. The transmission shaft can be driven by the motor shaft to drive the bevel gear, the first and second ring gears, and the driving member to rotate.

Abstract: An electric ratchet wrench includes a driving member rotatably mounted in a body for driving a fastener. A pawl device is pivotably mounted to the driving member. First and second ring gears are rotatably mounted around the driving member and mesh with the pawl device. A direction switching rod is pivotably mounted to the driving member. A spur gear is mounted on a transmission shaft rotatably received in the body and meshes with the first and second ring gears. A clutch member is mounted on the transmission shaft and is releasably coupled with another clutch member coupled to a motor. The transmission shaft can be driven by the motor to drive the spur gear, the first and second ring gears, and the driving member.

Abstract: A method of threadably coupling a first fastener with a second fastener using a rotary drive including a tool. The method includes rotationally anchoring the second fastener relative to the tool by co-axially urging a fastener-engagement portion of the tool against the second fastener and rotating the tool relative to the second fastener using a socket of the rotary drive until the fastener-engagement portion of the tool mates with a receiving portion of the second fastener, receiving the first fastener within the socket of the rotary drive co-axially with the fastener-engagement portion of the tool, and rotating the first fastener with the socket of the rotary drive relative to a housing of the rotary drive to cause the first fastener to threadably engage the second fastener.

Abstract: A clutch within a torque-limiting device which may include a shaft extending axially through a clutch assembly and a spring to connect to a nut. The clutch having swappable gear rings. The upper and lower shanks may be under a force from the spring and further configured to selectively engage within a predetermined torque limit and disengage at above the predetermined torque limit. Accordingly, the shaft may receive torque up to the predetermined limit as provided by a user operating a handle of the torque-limiting device. The torque-limiting device may be disposable, reusable, economical, and have high torque capabilities.

Abstract: A rotary-drive sub-assembly includes a tool and a tool retainer. The tool includes a fastener-engagement portion, a first threaded portion, and a tool-change-engagement portion between the fastener-engagement portion and the first threaded portion. The tool retainer includes a body and a retaining member. The body includes a symmetry axis, a second threaded portion, configured to be threadably fastened with the first threaded portion of the tool so that the tool is rotationally anchored relative to the body of the tool retainer about the symmetry axis and is translationally anchored relative to the body of the tool retainer along the symmetry axis, and a key, fixed relative to the second threaded portion. The tool retainer further includes a retaining member that is removably coupled to the body at a fixed location.

Abstract: Manufacturing systems and methods are disclosed. In one example, an apparatus to apply a predetermine torque to a fitting having a head and a nut engageable with the head is provided. The apparatus includes a driveshaft, configured to be arranged concentrically with an axis and to be rotatable about the axis, a first socket, configured to be arranged concentrically with the axis and to receive the head, and a second socket, configured to receive the nut and to be rotatable relative to the first socket by the driveshaft.

Abstract: A torque-controlled screwdriver for medical use includes a hollow maneuvering body, coaxially housed within which are a first bushing and a second bushing provided with respective front toothings for mutual torsional coupling. The first bushing is permanently connected in rotation to the maneuvering body, and the second bushing drives a tool in rotation. The front toothings are configured for disengaging from one another when the screwing torque applied by the maneuvering body to the tool exceeds a predetermined threshold value. A system for enabling a free rotation of a pre-set angular amplitude of the maneuvering body with respect to the tool in the opposite direction to that of screwing is located between the second bushing and the tool.

Abstract: An apparatus to allow a one-handed operation of mounting a vibration sensor to a mounting pad adhered to a machine. An attachment screw includes a recessed socket with a detent to releasably retain a ball-end hex driver such that the driver can remain coupled to the attachment screw without force being applied by the user. Also, a handheld device includes a driver having a handle portion and a driver shaft extending therefrom, the driver shaft having a driver portion at a distal end, and a vibration sensor support configured to support the vibration sensor such that the driver portion has access to an attachment screw threaded through the vibration sensor, and coupled to the driver such that the vibration sensor support is rotatable around a longitudinal axis of the driver shaft and slidable along a longitudinal portion of the driver shaft.

Abstract: A modular dynamic pedicle screw system including anchoring device having a threaded shank for anchoring within a vertebra, an intermediate element and a head portion configured to receive and secure a rigid or non-rigid stabilization rod. The threaded shank, the intermediate element and the head portion of the anchoring device are cannulated to permit percutaneous implantation of the device. The intermediate portion is designed to be removable from the threaded shank portion subsequent to implantation of the anchoring device to enable substitution of another intermediate element having different dynamic characteristics. The dynamic stabilization system includes an adjustable torque limiting device that is interchangeable between a tap device and a screw driver. The torque device provides information relative to the patient's bone quality inter-operatively in order to determine the appropriate modulus of elasticity for the dynamic pedicle screw.

Abstract: A torque control wrench assembly for a vehicle is disclosed. The assembly includes a handle, a ratchet unit having a first ratchet for rotating in engagement with the handle and a second ratchet engaged with the first ratchet, for transferring rotational force applied from the first ratchet, a transmission unit engaged with the second ratchet, for changing the rotational force transferred from the second ratchet, a socket unit having one end engaged with the transmission unit and the other end engaged with a wheel nut, for tightening or loosening the wheel nut by receiving the rotational force, a housing opened at both ends, and a torque control unit into which the first ratchet is inserted and which is engaged with the housing, covering an opened end of the housing, for controlling the rotational force applied to the socket unit by pressing the first ratchet.

Abstract: A new type adjustable torque wrench is disclosed, which comprises a handle, a housing and a screwdriver, wherein the housing is engaged with handle, a cylindrical barrel is fixed into the housing, a lower and upper gear arranged in the barrel, and the engagement surfaces therebetween consist of a number of circumferentially arranged inclined surfaces, the upper gear contains several clamping strips on the outer side wall for engagement with the corresponding gear grooves on the inner wall of the barrel, the barrel has several notches regularly spaced on the upper circumferential surface, a rotatable lid containing several protrusions on the side wall for engagement with the notches is arranged on the notches, a spring and a gasket are provided between the rotatable lid and the upper gear, there is a locking apparatus disposed on the rotatable lid.

Abstract: A fastening tool is provided that incorporates, in an outer annular body into which a first nut is inserted to be driven to rotate, an inner annular body into which a first nut and a second nut having a pitch different from the pitch of the first nut are inserted to be driven to rotate, and that simultaneously rotates the two nuts and fastens the nuts to a bolt. A flange shaft body is driven to rotate relatively to the outer annular body and the inner annular body via a plurality of balls. The balls are held by the flange shaft body and pressed towards notches of the outer annular body and the inner annular body with urging forces of first and second urging members via holding members respectively.

Abstract: A torque-limiting driving tool having a body having an axis of rotation, an elongated shaft disposed along the axis of rotation and supported by the body, and a torque-limiting element disposed to limit the amount of torque imposed on the body which is transmitted to the elongated shaft. The torque-limiting element includes opposed cams each of which comprises a metallic cam surface and a non-metallic structural base which is disposed to hold the metallic cam surface in operable position within the body. The torque-limiting driver may have a torque-adjustment element which is operable to adjust the torque value to which the transmitted torque is limited, which may include a plug bearing threads which are compatible with threads of the body. The body may include a locking element which drivably interacts with the plug to resist spontaneous rotation of the plug.

Abstract: The invention provides an adjustable torque screwdriver, including a torque input assembly and a torque output assembly, and further including a ratchet pair, which comprises a first ratchet and a second ratchet, respectively having circular teeth. The torque input assembly transmits the torque to the first ratchet, and the second ratchet then transmits the torque to the torque output assembly, and the circular teeth are arranged to enable the ratchet pair to slip either clockwise or counterclockwise, but not to slip in the respective opposite direction. The adjustable torque screwdriver also includes an adjusting assembly and an elastic assembly, the elastic assembly exerting pressure to the ratchet to tightly fit the ratchet pair, the adjusting assembly loading and unloading the elastic assembly, thereby adjusting the exerted pressure and the in-between fitting tightness of the ratchet pair, thus adjusting the torque for the ratchet pair to slip.

Abstract: A torsion adjusting structure of a screwdriver includes an inner tube, a front micro-adjusting rod, a spring, an upper toothed block, a lower toothed block, a stop member, a compressive member, a regulating knob and an interacting member combined together, and the torsion adjusting structure is assembled in the handle of a screwdriver. To adjust the torsion of the screwdriver, an auxiliary tool is inserted in the polygonal recessed groove of the regulating knob to rotate the regulating knob having the graduation and number of a torsion value to be set by the regulating knob aligned to the position of an indication mark on the handle. Thus, the value of the torsion of a screwdriver can conveniently be regulated via the graduations and numbers on the regulating knob. Furthermore, the front micro-adjusting rod can carry out micro-adjustment of torsion.

Abstract: A torque adjustment device for a screwdriver includes a tube located in the handle of the screwdriver and has an adjusting member connected to the first end thereof, a cap is connected to the second end of the tube. A first block and a second block are connected with each other by engagement of the teeth on the two blocks. A spring is biased between the first block and the adjusting member. A link is connected to the cap which pushes a pushing member to move the second block toward the first block when using an assistance tool to rotate the cap. The first block is able to move toward the second block by rotating the adjusting member so as to change the matching force between the teeth of the blocks. The cap has digits and marks to acknowledge the user the setting value of the torque.

Abstract: A torque wrench comprising: a body, an extension, a torque mechanism, a handle, and a positioning torque mechanism. The positioning torque mechanism includes a pressing cap, a clutch ring, and a spring. The pressing cap has a boss and an orifice, the orifice has plural shoulders, between two spaced shoulders is defined a recess, the pressing cap has an elongated hole and a peg. The clutch ring has plural teeth and plural first limiting projections, each first limiting projection has a tilted end portion, and between two spaced first limiting projections is defined a first limit notch, the handle includes a hollow locking member, and the locking member has at least one protrusion, each protrusion has a tilted second limit notch and an inclined edge, between two spaced protrusions is defined a third limit notch; the spring has two ends abutting against the clutch ring and the fixing member.

Abstract: A bidirectional torque limiting driver with a handle, internal wall, movable head and a tool mounted thereon, with flexible torque limiting flex ramp(s) formed on said internal wall, whereby said ramps move under sufficient force to impart a predetermined torque to a tip is disclosed.

Abstract: A torque adjustment device for a screwdriver includes a tube located in the handle of the screwdriver and has an adjusting member connected to the first end thereof, a cap is connected to the second end of the tube. A first block and a second block are connected with each other by engagement of the teeth on the two blocks. A spring is biased between the first block and the adjusting member. A link is connected to the cap which pushes a pushing member to move the second block toward the first block when using an assistance tool to rotate the cap. The first block is able to move toward the second block by rotating the adjusting member so as to change the matching force between the teeth of the blocks. The cap has digits and marks to acknowledge the user the setting value of the torque.

Abstract: The present invention relates to a non-return ratchet type torque socket comprising a shaft rod and a shaft cylinder. A core shaft of shaft rod is sleeved with a mobile ratchet capable of axially moving; the shaft cylinder having a shaft slot formed for being sleeved with the core shaft; an accommodation slot is formed in the shaft slot thereby allowing the mobile ratchet to be accommodated; the interior of the accommodation slot is formed a fixed ratchet; a fixed ratchet teeth are mutually engaged with a mobile ratchet teeth; when the core shaft rotates in the shaft slot and the applied torque exceeds the preset torque value, the core shaft idly rotates in the shaft slot, the mobile ratchet teeth of the mobile ratchet are engaged and rotated along the fixed ratchet teeth of the fixed ratchet for axially and elastically moving so as to generate a sound.

Abstract: A hand tool includes a tool shaft having a shank and a handle pivotally coupled together, and a tool head, which includes a socket defining a socket hole attachable to a locknut at a coaxial cable for fastening or loosening the locknut and a side opening for the passing of the locknut into or out of the socket hole, a driven structure located on an inner side of a receiving hole at one side of the socket hole, a transmission shaft coupled to the shank of the tool shaft and having a driving head located on one end thereof for engagement with the driven structure of the socket, and an elastic member stopped between the driving head and the socket such that when the socket reaches a predetermined torque value during operation, the driving head is moved axially away from the driven structure to compress the elastic member and to run idle.

Abstract: A ratchet tool, including a shaft defining a longitudinal axis; a handle coaxial to the shaft; a first gear immovably fixed to the shaft and disposed in the handle; a second gear rotatably and longitudinally movable with respect to the shaft, where the second gear engages the first gear to limit torque transfer from the handle to the shaft in a first direction and provides substantially zero torque transfer in a second direction; a first spring disposed between the second gear and the handle; a third gear rotatably and longitudinally movable with respect to the shaft, where the third gear engages the first gear to limit torque transfer from the handle to the shaft in the second direction and provides substantially zero torque transfer in the first direction; and a second spring disposed between the third gear and the handle.

Abstract: A torsion adjusting structure of a screwdriver includes an inner tube, a front micro-adjusting rod, a spring, an upper toothed block, a lower toothed block, a stop member, a compressive member, a regulating knob and an interacting member combined together, and the torsion adjusting structure is assembled in the handle of a screwdriver. To adjust the torsion of the screwdriver, an auxiliary tool is inserted in the polygonal recessed groove of the regulating knob to rotate the regulating knob having the graduation and number of a torsion value to be set by the regulating knob aligned to the position of an indication mark on the handle. Thus, the value of the torsion of a screwdriver can conveniently be regulated via the graduations and numbers on the regulating knob. Furthermore, the front micro-adjusting rod can carry out micro-adjustment of torsion.

Abstract: A tool holder for use with a power tool includes an input shaft with a rear portion couplable to a power tool, and an output shaft with a front portion couplable to a tool bit. A clutch assembly releasably non-rotationally couples a front portion of the input shaft to a rear portion of the output shaft, and includes a recess in the front portion of the input shaft or the rear portion of the output shaft, an aperture in the other of the front portion of the input shaft or the rear portion of the output shaft, a roller received in the aperture, and a spring that biases the roller radially inwardly toward the recess. The spring enables release of the roller radially outwardly from the recess when a predetermined torque threshold is exceeded, such that torque is not transmitted from the input shaft to the output shaft.

Abstract: The present invention relates to a non-return ratchet type torque socket comprising a shaft rod and a shaft cylinder. A core shaft of shaft rod is sleeved with a mobile ratchet capable of axially moving; the shaft cylinder having a shaft slot formed for being sleeved with the core shaft; an accommodation slot is formed in the shaft slot thereby allowing the mobile ratchet to be accommodated; the interior of the accommodation slot is formed a fixed ratchet; a fixed ratchet teeth are mutually engaged with a mobile ratchet teeth; when the core shaft rotates in the shaft slot and the applied torque exceeds the preset torque value, the core shaft idly rotates in the shaft slot, the mobile ratchet teeth of the mobile ratchet are engaged and rotated along the fixed ratchet teeth of the fixed ratchet for axially and elastically moving so as to generate a sound.

Abstract: A torque-controlled screwdriver for medical use includes a hollow manoeuvring body, coaxially housed within which are a first bushing and a second bushing provided with respective front toothings for mutual torsional coupling. The first bushing is permanently connected in rotation to the manoeuvring body, and the second bushing drives a tool in rotation. The front toothings are configured for disengaging from one another when the screwing torque applied by the manoeuvring body to the tool exceeds a predetermined threshold value. A system for enabling a free rotation of a pre-set angular amplitude of the manoeuvring body with respect to the tool in the opposite direction to that of screwing is located between the second bushing and the tool.

Abstract: A torque-limiting device is disclosed, which may include a shaft extending axially through upper and lower shanks and a spring to connect to a nut. The upper and lower shanks may be under a force from the spring and further configured to selectively engage within a predetermined torque limit and disengage at above the predetermined torque limit. Accordingly, the shaft may receive torque up to the predetermined limit as provided by a user operating a handle of the torque-limiting device. The torque-limiting device may be disposable, reusable, economical, and have high torque capabilities.

Abstract: A hand tool torsion adjustment structure includes a main mechanism, a torsion release mechanism and a micro-adjustment mechanism. The main mechanism is composed of a working rod and a tool handle while the torsion release mechanism is provided with a first engage tooth, a second engage tooth and a spring, and the micro-adjustment mechanism consists of a resisting member, an interacting member and at least one adjusting pinion. The torsion value of the hand tool can quickly be adjusted through the main mechanism and the torsion release mechanism, and the torsion preset value of the hand tool can precisely be fine-adjusted via the micro-adjustment mechanism.

Abstract: A torque-limiting driver is disclosed, having a handle, a body, a torque-limiting assembly and a work-piece engaging tip. The torque-limiting assembly includes an upper and lower shank that have a plurality of teeth circumferentially spaced. The teeth have a vertical face, an inclined face, and a flat peak. There is a spring for applying pressure across the upper and lower shank with multiple washers interposed between the lower shaft and spring. In some instances, there is a round-square drive with arched catches having preselected radii to assure operation over certain cycles at selected torque and to reduce nose cone damage and breakage at a predetermined measurement of inch-pounds of torque.